我碰到这个问题的时候，没有数据类型不匹配的情况，也没有表达无法向action传递数据的情况，一直报这样的错误，意思就是无法使用Customer中的get方法来赋值。完整报错如下所示：

HTTP Status 500 - IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid; nested exception is org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid

type Exception report

message IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid; nested exception is org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.orm.hibernate5.HibernateSystemException: IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid; nested exception is org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid

	org.springframework.orm.hibernate5.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:219)

	org.springframework.orm.hibernate5.HibernateTemplate.doExecute(HibernateTemplate.java:344)

	org.springframework.orm.hibernate5.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:309)

	org.springframework.orm.hibernate5.HibernateTemplate.save(HibernateTemplate.java:616)

	cn.itcast.dao.VisitDaoImpl.add(VisitDaoImpl.java:15)

	cn.itcast.service.VisitService.addVisit(VisitService.java:18)

	cn.itcast.service.VisitService$$FastClassBySpringCGLIB$$efc7724.invoke(<generated>)

	org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

	org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)

	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)

	org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)

	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)

	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)

	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

	org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)

	cn.itcast.service.VisitService$$EnhancerBySpringCGLIB$$ff1802d9.addVisit(<generated>)

	cn.itcast.action.VisitAction.addVisit(VisitAction.java:48)

	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	java.lang.reflect.Method.invoke(Method.java:498)

	ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:891)

	ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1293)

	ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)

	com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)

	com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)

	ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1369)

	ognl.ASTMethod.getValueBody(ASTMethod.java:90)

	ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)

	ognl.SimpleNode.getValue(SimpleNode.java:258)

	ognl.Ognl.getValue(Ognl.java:494)

	ognl.Ognl.getValue(Ognl.java:458)

	com.opensymphony.xwork2.ognl.OgnlUtil$2.execute(OgnlUtil.java:309)

	com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecute(OgnlUtil.java:340)

	com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:307)

	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:423)

	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:287)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:250)

	org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)

	org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)

	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)

	org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)

	org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)

	org.springframework.orm.hibernate5.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151)

	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of cn.itcast.entity.Customer.cid

	org.hibernate.property.access.spi.GetterMethodImpl.get(GetterMethodImpl.java:64)

	org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:223)

	org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4601)

	org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4313)

	org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:226)

	org.hibernate.engine.internal.ForeignKeys$Nullifier.isNullifiable(ForeignKeys.java:160)

	org.hibernate.engine.internal.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:88)

	org.hibernate.engine.internal.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:64)

	org.hibernate.action.internal.AbstractEntityInsertAction.nullifyTransientReferencesIfNotAlready(AbstractEntityInsertAction.java:114)

	org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:69)

	org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:597)

	org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:232)

	org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:213)

	org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:256)

	org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:317)

	org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:272)

	org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:178)

	org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:109)

	org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192)

	org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:38)

	org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177)

	org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:32)

	org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73)

	org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:679)

	org.hibernate.internal.SessionImpl.save(SessionImpl.java:671)

	org.hibernate.internal.SessionImpl.save(SessionImpl.java:666)

	org.springframework.orm.hibernate5.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:620)

	org.springframework.orm.hibernate5.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:616)

	org.springframework.orm.hibernate5.HibernateTemplate.doExecute(HibernateTemplate.java:341)

	org.springframework.orm.hibernate5.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:309)

	org.springframework.orm.hibernate5.HibernateTemplate.save(HibernateTemplate.java:616)

	cn.itcast.dao.VisitDaoImpl.add(VisitDaoImpl.java:15)

	cn.itcast.service.VisitService.addVisit(VisitService.java:18)

	cn.itcast.service.VisitService$$FastClassBySpringCGLIB$$efc7724.invoke(<generated>)

	org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

	org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)

	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)

	org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)

	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)

	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)

	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

	org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)

	cn.itcast.service.VisitService$$EnhancerBySpringCGLIB$$ff1802d9.addVisit(<generated>)

	cn.itcast.action.VisitAction.addVisit(VisitAction.java:48)

	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	java.lang.reflect.Method.invoke(Method.java:498)

	ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:891)

	ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1293)

	ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)

	com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)

	com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)

	ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1369)

	ognl.ASTMethod.getValueBody(ASTMethod.java:90)

	ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)

	ognl.SimpleNode.getValue(SimpleNode.java:258)

	ognl.Ognl.getValue(Ognl.java:494)

	ognl.Ognl.getValue(Ognl.java:458)

	com.opensymphony.xwork2.ognl.OgnlUtil$2.execute(OgnlUtil.java:309)

	com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecute(OgnlUtil.java:340)

	com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:307)

	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:423)

	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:287)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:250)

	org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)

	org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)

	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)

	org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)

	org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)

	org.springframework.orm.hibernate5.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151)

	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

java.lang.IllegalArgumentException: java.lang.ClassCastException@ccaeaf0

	sun.reflect.GeneratedMethodAccessor71.invoke(Unknown Source)

	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	java.lang.reflect.Method.invoke(Method.java:498)

	org.hibernate.property.access.spi.GetterMethodImpl.get(GetterMethodImpl.java:41)

	org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:223)

	org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4601)

	org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4313)

	org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:226)

	org.hibernate.engine.internal.ForeignKeys$Nullifier.isNullifiable(ForeignKeys.java:160)

	org.hibernate.engine.internal.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:88)

	org.hibernate.engine.internal.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:64)

	org.hibernate.action.internal.AbstractEntityInsertAction.nullifyTransientReferencesIfNotAlready(AbstractEntityInsertAction.java:114)

	org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:69)

	org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:597)

	org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:232)

	org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:213)

	org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:256)

	org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:317)

	org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:272)

	org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:178)

	org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:109)

	org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192)

	org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:38)

	org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177)

	org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:32)

	org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73)

	org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:679)

	org.hibernate.internal.SessionImpl.save(SessionImpl.java:671)

	org.hibernate.internal.SessionImpl.save(SessionImpl.java:666)

	org.springframework.orm.hibernate5.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:620)

	org.springframework.orm.hibernate5.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:616)

	org.springframework.orm.hibernate5.HibernateTemplate.doExecute(HibernateTemplate.java:341)

	org.springframework.orm.hibernate5.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:309)

	org.springframework.orm.hibernate5.HibernateTemplate.save(HibernateTemplate.java:616)

	cn.itcast.dao.VisitDaoImpl.add(VisitDaoImpl.java:15)

	cn.itcast.service.VisitService.addVisit(VisitService.java:18)

	cn.itcast.service.VisitService$$FastClassBySpringCGLIB$$efc7724.invoke(<generated>)

	org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

	org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)

	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)

	org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)

	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)

	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)

	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

	org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)

	cn.itcast.service.VisitService$$EnhancerBySpringCGLIB$$ff1802d9.addVisit(<generated>)

	cn.itcast.action.VisitAction.addVisit(VisitAction.java:48)

	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	java.lang.reflect.Method.invoke(Method.java:498)

	ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:891)

	ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1293)

	ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)

	com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)

	com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)

	ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1369)

	ognl.ASTMethod.getValueBody(ASTMethod.java:90)

	ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)

	ognl.SimpleNode.getValue(SimpleNode.java:258)

	ognl.Ognl.getValue(Ognl.java:494)

	ognl.Ognl.getValue(Ognl.java:458)

	com.opensymphony.xwork2.ognl.OgnlUtil$2.execute(OgnlUtil.java:309)

	com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecute(OgnlUtil.java:340)

	com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:307)

	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:423)

	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:287)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:250)

	org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)

	org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)

	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)

	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

	org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)

	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)

	org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)

	org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)

	org.springframework.orm.hibernate5.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151)

	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

note The full stack trace of the root cause is available in the Apache Tomcat/8.5.9 logs.

Apache Tomcat/8.5.9

后来发现是hbm.xml中写错了<many-to-one>中的class属性值。

只要class属性值错了都会报类似的错误。

如正确写法应该是这样的

<!-- 拜访记录所属用户 -->

        <many-to-one name="user" class="cn.itcast.entity.User" column="uvid" ></many-to-one>

        <!-- 拜访记录所属客户 -->

        <many-to-one name="customer" class="cn.itcast.entity.Customer" column="cvid"></many-to-one>

结果我写成了

<!-- 拜访记录所属用户 -->

        <many-to-one name="user" class="cn.itcast.entity.Customer" column="uvid" ></many-to-one>

        <!-- 拜访记录所属客户 -->

        <many-to-one name="customer" class="cn.itcast.entity.Customer" column="cvid"></many-to-one>

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